How to give object as key in hash map?

1.00/5 (1 vote)

See more:

I need to pass two Objects as parameters while creating Hash Map.One Object as Key and Other as Value.Is it possible using Hash Map?

What I have tried:

Java

Map m=new HashMap();
Employee e=new Employee(1,"Rajesh");
Department d=new Department(10,1);//1 is employee id here 

m.put(e,d);

What is the wrong Iam doing

Posted 19-Mar-16 2:55am

R R VARAPRASAD

Updated 19-Mar-16 3:10am

Richard MacCutchan

Add a Solution

Comments

Richard MacCutchan 19-Mar-16 9:14am

I think you need to declare the types used in the map. something like:
Map m = new HashMap<Employee, Department>();

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Last 24hrs

This month

Pete O'Hanlon	110
Richard MacCutchan	80
OriginalGriff	70
Richard Deeming	55
Rick York	50

Pete O'Hanlon	1,940
OriginalGriff	1,415
Graeme_Grant	895
Richard Deeming	853
Dave Kreskowiak	694